Improvement in union-valve coupling



SANFORD O'. BLANDING, OF SMITHFIELD, RHODE ISLAND.v

Letters Patent No. 80,704, dated August 4, 1868..

IMPROVEMENT IN UNION-VALV OOUPLING.

@he tgnhnle wenn in in ilgese sters nteirt mit linking nuit in tigesume.

TO ALL WHOM IT MAY CONOERN:

' Be it known that I, SANnonnO. BLANDI-Ne, of (Central Fells)Smithfield, in the county otrIrovidence, and State of Rhode Island, haveinvented a. new and useful Improvement in Union-Couplings, which I terma combined union-coupling and cheek-valve; and I do hereby declare thefollowing specification, taken in connection with the drawings, making apart of the same, lis n. full, clear, and exact description thereof.

Figure 1 is an elevation.

Figure 2 is a vertical section, on the line a: y of fig. 4.

Figure 3 isa top viewof the valve.

, Figure 4 is a top view of the coupling.

In the accompanying drawings- A C are thetwo well-known parts of n.coupling familiar to all mechanics.

Bis the usual coupling-ring, furnished with planes about its periphery,to accommodate a wrench, and forming in figure a many-sided polygon. Thetwo pnrts of the coupling are held together by the ring B, in the usualway, clearly shown at fig. 2.

-Between the two flat faces of the parts ofthe coupling A and O,-Iintel-pose a combined valve-'and packing-ring, D. Aitop view ofsuch-valve is shown at fig. 3. Its construction is well iinderstoocl byall pump-manufacturers.

A circular disk ofleathcr is cut so that a segmental piece, fo, shall betaken lout of thc same, leaving a cent1-al circular portion, F, attachedat oneA side to theidisk. This central portion, whichis Weighted, formsthe common flop-valve, and the surrounding coneentric'portion, b,furnishes a packing to beinterposed between the two faces ofthecoupling. 4 i

It is quite obvious, that when-the parts are arranged and united asshown in section at fig. 2, the packing-, 4

ring will close the joint, and` the valve will be in proper position. i

What I claim as my invention, and desire to secure by Letters Patent,is-

A combined coupling and check-valve, constructed and arrangedsubstantially as described, forthe puri poses specified.Y

SANFORD O. BLNDING.

Witnesses:

'JonN D. TuUnsIoN,

WILLIAM W. Rlctinnn.

